An on-line detection circuit for a lightning protector
A detection circuit and lightning protection technology, applied in the direction of measuring electricity, measuring electric variables, instruments, etc., can solve the problem that the signal lightning protection device does not have the function of failure detection, so as to shorten the on-site detection time, prolong the power supply time, and avoid the system the effect of interruption
Active Publication Date: 2018-07-06
广西杰正电力科技有限公司
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Problems solved by technology
However, most of the current signal SPDs do not have the failure detection function, or require special and expensive detection equipment for offline detection
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[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0016] Such as figure 1 As shown, a new type of online detection circuit for lightning arresters is used to solve the problem of online detection of signal lightning arresters in the field, and does not require additional detection equipment, including lightning protection devices V1 and V5, thermal fuse F1, and optocoupler V2 , light-emitting diodes V3 and V4, positive temperature coefficient thermistor R1, resistors R2-R5, capacitors C1-C3, single-chip microcomputer U1, pin header P1, battery BAT1, detection key S1.
[0017] One end of the lightning protection device V1 is connected to an external electrical appliance, the other end is connected to one end of the thermal fuse F1, the other end of the thermal fuse F1 is connected to one end of the lightning protection device V5 and one end of the resistor R4 at the same time, and the other end of the l...
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The invention discloses a novel lightning protection device online detection circuit. The lightning protection device online detection circuit comprises a lightning protection device V1, a lightning protection device V5, a thermal fuse F1, an optocoupler V2, a light emitting diode V3, a light emitting diode V4, a positive temperature coefficient thermistor R1, resistors R2-R5, capacitors C1-C3, a single chip microcomputer U1, a pin header P1, a battery BAT1 and a detection key S1. The novel lightning protection device online detection circuit does not need to be powered by an external power supply, the single chip microcomputer is only powered in detection, and the single chip microcomputer is very small in power, so that the power supply time is effectively prolonged, and the lightning protection device online detection circuit is enabled to cover the whole life cycle of the lightning protection device. The lightning protection device online detection circuit does not need to interrupt signal transmission in detection, so that system interruption caused by lightning protection device detection is avoided, and the field detection time of products is greatly shortened.
Description
technical field [0001] The invention relates to a novel on-line detection circuit of a lightning protector, which mainly solves the problems of no clear indication and on-site inspection of a signal lightning protector in field application. technical background [0002] At present, in detection systems in many fields, sensors are usually used to monitor environmental conditions, and standard analog signals or digital signals such as 0...20mA, 0...10V are widely used as outputs to transmit detailed parameters in the production process. However, these Once the signal line is exposed outdoors or in a strong electromagnetic environment, it is very easy to cause damage to the sensor or receiving device, resulting in direct and greater indirect economic losses. Therefore, it is necessary to increase the lightning arrester to protect the equipment. [0003] According to the national regulations on the use of lightning arresters, the performance of lightning arresters needs to be t...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 叶霞安康王玉槐倪虹奕斌张慧熙
Owner 广西杰正电力科技有限公司